Traveling a more environmentally friendly road

When you travel these days, you're doing so in a more environmentally friendly fashion than you did a decade ago — and you probably can't even tell.

Airlines are flying planes that have more fuel-efficient engines and are lighter in weight to save on costly jet fuel. Architects are designing hotels to be more efficient in their use of energy and water, and to reduce waste. Rental car agencies are adding more hybrid and electric cars to their fleets.